<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        body{
            background-color: #666;
        }
        div{
            font-size: 100px;
            text-align: center;
            font-weight: bold;
            font-family: "Microsoft Yahei";
            color: #666;
        }
        .tu {
            text-shadow: -1px -1px 1px #fff, 1px 1px 1px #000;
        }

        .ao {
            text-shadow: -1px -1px 1px #000, 1px 1px 1px #fff;
        }

    </style>
</head>
<body>
    <div>
        <p class="tu">Hello Word!!!</p>
        <p class="ao">Hello Word!!!</p>
    </div>
    
</body>
</html>